What is true about water that is freezing?

a. the change cannot be undone.

b. it is going through a physical change.

c. it is going through a chemical change.

d. the chemical makeup of the water will not remain the same?

Rutherfordium has atomic number of 84 how many protons and electrons does it have

Which of the following actions will raise the osmotic pressure of a solution? (A) increasing the temperature (B) decreasing the solute concentration (C) adding more solvent (D) decreasing the temperature (E) none of the above

Beryllium (Be) and fluorine (F) combine to make the compound BeF2. What is the chemical name for this compound?

When was the idea of an atom first developed? Describe this theory.

To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configuration with numbers, letters, and superscripts?

Which metal is more active than tin, but less active than zinc

Why does the amount of energy available change as you move from one trophic level to the next?

What type of bond holds metal atoms together?

Imagine you are purifying a protein which accounts for 0.001% of the total protein within a cell. how many steps of purification are required to yield pure protein, assuming a 10 fold purification with each step of purification?

If an object has the mass of 109.67 g and a volume of 16.99 cm3 what's its density